Crew skills/perks



I am trying to understand the crew training but still it's not clear to me.
for example:Now the major training of all my crew members of Luchs is about to 100%. Now if i choose a skill and move these crews to next tank (Leopard) and retrain them does the skill training will also increase with crew training or the skills training will only increase untill these crew's reaches 100% major qualification in Leopard